Further Kinematics

Revise Further Kinematics for Mechanics 3 WME03 (A2 Level) — revision notes and instant AI marking.

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Edexcel IAL Mechanics 3 (WME03)

The big idea: When acceleration depends on displacement, write it as v dv/dx; when it depends on time, as dv/dt; then separate and integrate.

Summary — What This Chapter Covers

1. Acceleration as a Function of Time, Displacement or Velocity

Variable a

Pick the form of a that contains the variable a depends on, separate variables, integrate, and use the given conditions.

Worked Example

A particle has a = 3x² m s⁻² (x ≥ 0) and v = 2 m s⁻¹ at x = 0. Find v when x = 2.

Practice Question

a = −kv. Show that v = Ue^−kt, where U is the initial speed.

Memorise

v dv/dx

dv/dt

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